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Message-Id: <159851372156137@kroah.com>
Date: Thu, 27 Aug 2020 09:35:23 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
torvalds@...ux-foundation.org, stable@...r.kernel.org
Cc: lwn@....net, jslaby@...e.cz,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: Linux 5.8.5
diff --git a/Makefile b/Makefile
index 9a7a416f2d84..f47073a3b474 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 5
PATCHLEVEL = 8
-SUBLEVEL = 4
+SUBLEVEL = 5
EXTRAVERSION =
NAME = Kleptomaniac Octopus
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index 000f57198352..9f2c697ba0ac 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -3609,7 +3609,7 @@ static int check_missing_comp_in_tx_queue(struct ena_adapter *adapter,
}
u64_stats_update_begin(&tx_ring->syncp);
- tx_ring->tx_stats.missed_tx = missed_tx;
+ tx_ring->tx_stats.missed_tx += missed_tx;
u64_stats_update_end(&tx_ring->syncp);
return rc;
@@ -4537,6 +4537,9 @@ static void ena_keep_alive_wd(void *adapter_data,
tx_drops = ((u64)desc->tx_drops_high << 32) | desc->tx_drops_low;
u64_stats_update_begin(&adapter->syncp);
+ /* These stats are accumulated by the device, so the counters indicate
+ * all drops since last reset.
+ */
adapter->dev_stats.rx_drops = rx_drops;
adapter->dev_stats.tx_drops = tx_drops;
u64_stats_update_end(&adapter->syncp);
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index f2f9086ebe98..b9c658e0548e 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -576,7 +576,7 @@ static int load_flat_file(struct linux_binprm *bprm,
goto err;
}
- len = data_len + extra;
+ len = data_len + extra + MAX_SHARED_LIBS * sizeof(unsigned long);
len = PAGE_ALIGN(len);
realdatastart = vm_mmap(NULL, 0, len,
PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE, 0);
@@ -590,7 +590,9 @@ static int load_flat_file(struct linux_binprm *bprm,
vm_munmap(textpos, text_len);
goto err;
}
- datapos = ALIGN(realdatastart, FLAT_DATA_ALIGN);
+ datapos = ALIGN(realdatastart +
+ MAX_SHARED_LIBS * sizeof(unsigned long),
+ FLAT_DATA_ALIGN);
pr_debug("Allocated data+bss+stack (%u bytes): %lx\n",
data_len + bss_len + stack_len, datapos);
@@ -620,7 +622,7 @@ static int load_flat_file(struct linux_binprm *bprm,
memp_size = len;
} else {
- len = text_len + data_len + extra;
+ len = text_len + data_len + extra + MAX_SHARED_LIBS * sizeof(u32);
len = PAGE_ALIGN(len);
textpos = vm_mmap(NULL, 0, len,
PROT_READ | PROT_EXEC | PROT_WRITE, MAP_PRIVATE, 0);
@@ -635,7 +637,9 @@ static int load_flat_file(struct linux_binprm *bprm,
}
realdatastart = textpos + ntohl(hdr->data_start);
- datapos = ALIGN(realdatastart, FLAT_DATA_ALIGN);
+ datapos = ALIGN(realdatastart +
+ MAX_SHARED_LIBS * sizeof(u32),
+ FLAT_DATA_ALIGN);
reloc = (__be32 __user *)
(datapos + (ntohl(hdr->reloc_start) - text_len));
@@ -652,9 +656,8 @@ static int load_flat_file(struct linux_binprm *bprm,
(text_len + full_data
- sizeof(struct flat_hdr)),
0);
- if (datapos != realdatastart)
- memmove((void *)datapos, (void *)realdatastart,
- full_data);
+ memmove((void *) datapos, (void *) realdatastart,
+ full_data);
#else
/*
* This is used on MMU systems mainly for testing.
@@ -710,7 +713,8 @@ static int load_flat_file(struct linux_binprm *bprm,
if (IS_ERR_VALUE(result)) {
ret = result;
pr_err("Unable to read code+data+bss, errno %d\n", ret);
- vm_munmap(textpos, text_len + data_len + extra);
+ vm_munmap(textpos, text_len + data_len + extra +
+ MAX_SHARED_LIBS * sizeof(u32));
goto err;
}
}
diff --git a/fs/io_uring.c b/fs/io_uring.c
index dd8ad87540ef..26978630378e 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4363,7 +4363,8 @@ static int io_sq_thread_acquire_mm(struct io_ring_ctx *ctx,
struct io_kiocb *req)
{
if (io_op_defs[req->opcode].needs_mm && !current->mm) {
- if (unlikely(!mmget_not_zero(ctx->sqo_mm)))
+ if (unlikely(!(ctx->flags & IORING_SETUP_SQPOLL) ||
+ !mmget_not_zero(ctx->sqo_mm)))
return -EFAULT;
kthread_use_mm(ctx->sqo_mm);
}
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index b8afefe6f6b6..7afe52bd038b 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -5419,8 +5419,8 @@ struct sk_buff *skb_vlan_untag(struct sk_buff *skb)
skb = skb_share_check(skb, GFP_ATOMIC);
if (unlikely(!skb))
goto err_free;
-
- if (unlikely(!pskb_may_pull(skb, VLAN_HLEN)))
+ /* We may access the two bytes after vlan_hdr in vlan_set_encap_proto(). */
+ if (unlikely(!pskb_may_pull(skb, VLAN_HLEN + sizeof(unsigned short))))
goto err_free;
vhdr = (struct vlan_hdr *)skb->data;
diff --git a/net/ethtool/features.c b/net/ethtool/features.c
index 4e632dc987d8..495635f152ba 100644
--- a/net/ethtool/features.c
+++ b/net/ethtool/features.c
@@ -224,7 +224,9 @@ int ethnl_set_features(struct sk_buff *skb, struct genl_info *info)
DECLARE_BITMAP(wanted_diff_mask, NETDEV_FEATURE_COUNT);
DECLARE_BITMAP(active_diff_mask, NETDEV_FEATURE_COUNT);
DECLARE_BITMAP(old_active, NETDEV_FEATURE_COUNT);
+ DECLARE_BITMAP(old_wanted, NETDEV_FEATURE_COUNT);
DECLARE_BITMAP(new_active, NETDEV_FEATURE_COUNT);
+ DECLARE_BITMAP(new_wanted, NETDEV_FEATURE_COUNT);
DECLARE_BITMAP(req_wanted, NETDEV_FEATURE_COUNT);
DECLARE_BITMAP(req_mask, NETDEV_FEATURE_COUNT);
struct nlattr *tb[ETHTOOL_A_FEATURES_MAX + 1];
@@ -250,6 +252,7 @@ int ethnl_set_features(struct sk_buff *skb, struct genl_info *info)
rtnl_lock();
ethnl_features_to_bitmap(old_active, dev->features);
+ ethnl_features_to_bitmap(old_wanted, dev->wanted_features);
ret = ethnl_parse_bitset(req_wanted, req_mask, NETDEV_FEATURE_COUNT,
tb[ETHTOOL_A_FEATURES_WANTED],
netdev_features_strings, info->extack);
@@ -261,17 +264,15 @@ int ethnl_set_features(struct sk_buff *skb, struct genl_info *info)
goto out_rtnl;
}
- /* set req_wanted bits not in req_mask from old_active */
+ /* set req_wanted bits not in req_mask from old_wanted */
bitmap_and(req_wanted, req_wanted, req_mask, NETDEV_FEATURE_COUNT);
- bitmap_andnot(new_active, old_active, req_mask, NETDEV_FEATURE_COUNT);
- bitmap_or(req_wanted, new_active, req_wanted, NETDEV_FEATURE_COUNT);
- if (bitmap_equal(req_wanted, old_active, NETDEV_FEATURE_COUNT)) {
- ret = 0;
- goto out_rtnl;
+ bitmap_andnot(new_wanted, old_wanted, req_mask, NETDEV_FEATURE_COUNT);
+ bitmap_or(req_wanted, new_wanted, req_wanted, NETDEV_FEATURE_COUNT);
+ if (!bitmap_equal(req_wanted, old_wanted, NETDEV_FEATURE_COUNT)) {
+ dev->wanted_features &= ~dev->hw_features;
+ dev->wanted_features |= ethnl_bitmap_to_features(req_wanted) & dev->hw_features;
+ __netdev_update_features(dev);
}
-
- dev->wanted_features = ethnl_bitmap_to_features(req_wanted);
- __netdev_update_features(dev);
ethnl_features_to_bitmap(new_active, dev->features);
mod = !bitmap_equal(old_active, new_active, NETDEV_FEATURE_COUNT);
diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c
index cc8049b100b2..134e92382275 100644
--- a/net/ipv4/nexthop.c
+++ b/net/ipv4/nexthop.c
@@ -446,7 +446,7 @@ static int nh_check_attr_group(struct net *net, struct nlattr *tb[],
unsigned int i, j;
u8 nhg_fdb = 0;
- if (len & (sizeof(struct nexthop_grp) - 1)) {
+ if (!len || len & (sizeof(struct nexthop_grp) - 1)) {
NL_SET_ERR_MSG(extack,
"Invalid length for nexthop group attribute");
return -EINVAL;
@@ -1187,6 +1187,9 @@ static struct nexthop *nexthop_create_group(struct net *net,
struct nexthop *nh;
int i;
+ if (WARN_ON(!num_nh))
+ return ERR_PTR(-EINVAL);
+
nh = nexthop_alloc();
if (!nh)
return ERR_PTR(-ENOMEM);
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index a18c378ca5f4..d8f0102cec94 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -913,7 +913,15 @@ int ip6_tnl_rcv(struct ip6_tnl *t, struct sk_buff *skb,
struct metadata_dst *tun_dst,
bool log_ecn_err)
{
- return __ip6_tnl_rcv(t, skb, tpi, tun_dst, ip6ip6_dscp_ecn_decapsulate,
+ int (*dscp_ecn_decapsulate)(const struct ip6_tnl *t,
+ const struct ipv6hdr *ipv6h,
+ struct sk_buff *skb);
+
+ dscp_ecn_decapsulate = ip6ip6_dscp_ecn_decapsulate;
+ if (tpi->proto == htons(ETH_P_IP))
+ dscp_ecn_decapsulate = ip4ip6_dscp_ecn_decapsulate;
+
+ return __ip6_tnl_rcv(t, skb, tpi, tun_dst, dscp_ecn_decapsulate,
log_ecn_err);
}
EXPORT_SYMBOL(ip6_tnl_rcv);
diff --git a/net/netlink/policy.c b/net/netlink/policy.c
index f6491853c797..2b3e26f7496f 100644
--- a/net/netlink/policy.c
+++ b/net/netlink/policy.c
@@ -51,6 +51,9 @@ static int add_policy(struct nl_policy_dump **statep,
if (!state)
return -ENOMEM;
+ memset(&state->policies[state->n_alloc], 0,
+ flex_array_size(state, policies, n_alloc - state->n_alloc));
+
state->policies[state->n_alloc].policy = policy;
state->policies[state->n_alloc].maxtype = maxtype;
state->n_alloc = n_alloc;
diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c
index 300a104b9a0f..85ab4559f057 100644
--- a/net/qrtr/qrtr.c
+++ b/net/qrtr/qrtr.c
@@ -692,23 +692,25 @@ static void qrtr_port_remove(struct qrtr_sock *ipc)
*/
static int qrtr_port_assign(struct qrtr_sock *ipc, int *port)
{
+ u32 min_port;
int rc;
mutex_lock(&qrtr_port_lock);
if (!*port) {
- rc = idr_alloc(&qrtr_ports, ipc,
- QRTR_MIN_EPH_SOCKET, QRTR_MAX_EPH_SOCKET + 1,
- GFP_ATOMIC);
- if (rc >= 0)
- *port = rc;
+ min_port = QRTR_MIN_EPH_SOCKET;
+ rc = idr_alloc_u32(&qrtr_ports, ipc, &min_port, QRTR_MAX_EPH_SOCKET, GFP_ATOMIC);
+ if (!rc)
+ *port = min_port;
} else if (*port < QRTR_MIN_EPH_SOCKET && !capable(CAP_NET_ADMIN)) {
rc = -EACCES;
} else if (*port == QRTR_PORT_CTRL) {
- rc = idr_alloc(&qrtr_ports, ipc, 0, 1, GFP_ATOMIC);
+ min_port = 0;
+ rc = idr_alloc_u32(&qrtr_ports, ipc, &min_port, 0, GFP_ATOMIC);
} else {
- rc = idr_alloc(&qrtr_ports, ipc, *port, *port + 1, GFP_ATOMIC);
- if (rc >= 0)
- *port = rc;
+ min_port = *port;
+ rc = idr_alloc_u32(&qrtr_ports, ipc, &min_port, *port, GFP_ATOMIC);
+ if (!rc)
+ *port = min_port;
}
mutex_unlock(&qrtr_port_lock);
diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c
index 6ed1652d1e26..41d8440deaf1 100644
--- a/net/sched/act_ct.c
+++ b/net/sched/act_ct.c
@@ -704,7 +704,7 @@ static int tcf_ct_handle_fragments(struct net *net, struct sk_buff *skb,
err = ip_defrag(net, skb, user);
local_bh_enable();
if (err && err != -EINPROGRESS)
- goto out_free;
+ return err;
if (!err)
*defrag = true;
diff --git a/net/sctp/stream.c b/net/sctp/stream.c
index bda2536dd740..6dc95dcc0ff4 100644
--- a/net/sctp/stream.c
+++ b/net/sctp/stream.c
@@ -88,12 +88,13 @@ static int sctp_stream_alloc_out(struct sctp_stream *stream, __u16 outcnt,
int ret;
if (outcnt <= stream->outcnt)
- return 0;
+ goto out;
ret = genradix_prealloc(&stream->out, outcnt, gfp);
if (ret)
return ret;
+out:
stream->outcnt = outcnt;
return 0;
}
@@ -104,12 +105,13 @@ static int sctp_stream_alloc_in(struct sctp_stream *stream, __u16 incnt,
int ret;
if (incnt <= stream->incnt)
- return 0;
+ goto out;
ret = genradix_prealloc(&stream->in, incnt, gfp);
if (ret)
return ret;
+out:
stream->incnt = incnt;
return 0;
}
diff --git a/net/smc/smc_diag.c b/net/smc/smc_diag.c
index e1f64f4ba236..da9ba6d1679b 100644
--- a/net/smc/smc_diag.c
+++ b/net/smc/smc_diag.c
@@ -170,13 +170,15 @@ static int __smc_diag_dump(struct sock *sk, struct sk_buff *skb,
(req->diag_ext & (1 << (SMC_DIAG_DMBINFO - 1))) &&
!list_empty(&smc->conn.lgr->list)) {
struct smc_connection *conn = &smc->conn;
- struct smcd_diag_dmbinfo dinfo = {
- .linkid = *((u32 *)conn->lgr->id),
- .peer_gid = conn->lgr->peer_gid,
- .my_gid = conn->lgr->smcd->local_gid,
- .token = conn->rmb_desc->token,
- .peer_token = conn->peer_token
- };
+ struct smcd_diag_dmbinfo dinfo;
+
+ memset(&dinfo, 0, sizeof(dinfo));
+
+ dinfo.linkid = *((u32 *)conn->lgr->id);
+ dinfo.peer_gid = conn->lgr->peer_gid;
+ dinfo.my_gid = conn->lgr->smcd->local_gid;
+ dinfo.token = conn->rmb_desc->token;
+ dinfo.peer_token = conn->peer_token;
if (nla_put(skb, SMC_DIAG_DMBINFO, sizeof(dinfo), &dinfo) < 0)
goto errout;
diff --git a/net/tipc/crypto.c b/net/tipc/crypto.c
index c8c47fc72653..d6426b6cc9c5 100644
--- a/net/tipc/crypto.c
+++ b/net/tipc/crypto.c
@@ -757,10 +757,12 @@ static void tipc_aead_encrypt_done(struct crypto_async_request *base, int err)
switch (err) {
case 0:
this_cpu_inc(tx->stats->stat[STAT_ASYNC_OK]);
+ rcu_read_lock();
if (likely(test_bit(0, &b->up)))
b->media->send_msg(net, skb, b, &tx_ctx->dst);
else
kfree_skb(skb);
+ rcu_read_unlock();
break;
case -EINPROGRESS:
return;
diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c
index 217516357ef2..90e3c70a91ad 100644
--- a/net/tipc/netlink_compat.c
+++ b/net/tipc/netlink_compat.c
@@ -275,8 +275,9 @@ static int __tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
static int tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
struct tipc_nl_compat_msg *msg)
{
- int err;
+ struct nlmsghdr *nlh;
struct sk_buff *arg;
+ int err;
if (msg->req_type && (!msg->req_size ||
!TLV_CHECK_TYPE(msg->req, msg->req_type)))
@@ -305,6 +306,15 @@ static int tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
return -ENOMEM;
}
+ nlh = nlmsg_put(arg, 0, 0, tipc_genl_family.id, 0, NLM_F_MULTI);
+ if (!nlh) {
+ kfree_skb(arg);
+ kfree_skb(msg->rep);
+ msg->rep = NULL;
+ return -EMSGSIZE;
+ }
+ nlmsg_end(arg, nlh);
+
err = __tipc_nl_compat_dumpit(cmd, msg, arg);
if (err) {
kfree_skb(msg->rep);
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